Sole-rough-rounding machine



3 Sheetx-Sheet 1.

(No Model.)

H. T. CROSBY.

SOLE ROUGH ROUNDING MACHINE.

Patented Mar. 15, 1898.

liweniof: Jfinuord 1. Crosky,

' mbwsses:

cam/"fwd (No Model.) 3 SheetsSheet 2.

- H. T. CROSBY.

SOLE ROUGH ROUNDING MACHINE. No. 600,668. Patented Mar. 15,1898.

Witnesses: limvenior:

(No Model.) 3 Sheets-Sheet 3.

H. T. CROSBY. SOLE ROUGH ROUNDING MACHINE. No. 600,668. Patented Mar.15. 1898.

WWWWWM WM m BEE .Ewenior flanfordlflrosb ,QZMZMQL Lma, WASHINGTON a csaid figure.

IIANFORD T. CROSBY, OF BOSTON, MASSACHUSETTS.-

SOLE-ROUGH-ROUNDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 600,668, dated March15, 1898.

Application filed September 10,1897. fierial No. 651,197- (llo model.)

To rtZZ whom it may concern:

Be it known that I, HANFORD T. CROSBY,

of Boston, in the county of Suffolk and State.

of Massachusetts, have invented certain new and useful Improvements inSole-Rough- Rounding Machines, of which the following, taken inconnection with the accompanying drawings, is a specification.

My invention relates to sole-rough-rounding machines, is an improvementupon the invention described in another application of mine, filed July17, 1897, Serial No. 644,892, and it consists in certain novel featuresof construction, arrangement, and combination of parts which will bereadily understood by reference to the description of the accompa nyingdrawings and to the claims hereto appended and in which my invention isclearly pointed out.

Figure 1 of the drawings is a plan of the head of a machine embodying myinvention. Fig. 2 is a front elevation of the same. Fig. 3 is a sideelevation. Fig. 4 is a partial sectional elevation, the cutting planebeing on line was 011 Fig. 2 and looking toward theright of said figure.Fig. 5 is a vertical section on line 'y y on Fig. 4, looking toward theright of Fig. 6 is a rear elevation of the regulating-index anddetent-wheels and the detent-spring. Figs. 7 and 8 are respectively aplane and an edge view of the cutter.

In the drawings, A is the frame of the head of the machine, comprising abase and two upwardly-projecting arms, in suitable bearings in which aremounted the driving-shaft B, a fixed journal-pin B in axial line withsaid driving-shaft, the crank-shaft O, the camshaft D, and a fixedfulcrum-pin E.

The driving-shaft B has firmly secured upon its outer end thedriving-pulley F and near its inner end the worm G and has formed uponits inner end a crank-pin for operating the cutter-bar K.

The fixed journal-pin B has mounted upon its inner end the rear end ofthe arm or head I in such a manner that said arm may be 0s cillated to alimited extent about said journal-pin, and said pin has loosely mountedupon its outer end the lever J.

The head or arm I has formed therein two horizontal guideways, in whichare mounted,

so as to be movable endwise therein, the bars K and L.

The bar K has pivoted to its rear end one end of the link K, the otherend of which is mounted upon the crank-pin formed on the inner end ofthe shaft B, and the front end of said bar has secured thereto thecutter a.

The bar L has mounted on a vertical stud set in its front end thepressure-roll b and is connected at its rear end to the movable end ofthe short arm of the elbow-lever M, the long arm of which is connectedby the rod 0 to a treadle (not shown) mounted upon the floor in such amanner that a pressure upon the front end of the treadle will move thebar and roll toward the rear against the tension of the spring M. (Shownonly in dotted lines in Fig. 3.)

N is the feed-shaft, mounted in bearings in the stand N in an inclinedposition, and has secured to its front end the feed-disk N and to itsrear end the worm-wheel N which engages with and has motion imparted toit by the worm G.

O is the anvil-plate, against which the cutter a abuts after piercingthe sole, said plate being firmly bolted to the front end of the head I.

So far the parts described are constructed, arranged, and operatesubstantially as in my prior application before cited, in which twopressure-rolls were carried by the front end of the bar L, both rollsbeing mounted upon a single pin or pins in axial line with each other. Ihave found it desirable in practice to have the lower roll carried bysaid bar adjustable toward and from the front, and therefore in thisapplication I fitthe block. d to a groove in the under side of the barL, so that it can be moved endwise therein, and secure it in adjustedposition by a clampingscrew passing through a slot therein, and mountthe lower pressure and guide roll I) on a stud set in said block.

The rolls 1) and b are made partly frustoconical, as shown, so as to thebetter fit against the tread-surface of a sole on the last that hasconsiderable convexity or curve transversely.

The arm or headl has set in its side near its lower end the stud e,which is engaged by one end of the lever P, which is fulcrumed upon thepin E and has connected to its other end the rod or wire f, the lowerend of which is connected to a treadle (not shown) in such amanner thatif pressure is applied to the front end of the treadle the front end ofthe head I, the cutter a, and the anvil-plate 0 will be raised to permitthe free backward rotation of the cam-shaft after it has been partiallyrotated by the ratchets, said parts being returned to their normal orlowest positions when the pressure is removed from the treadle by thecombined action of gravity and the tension of the spring g, said normalor lowest position being controlled and regulated by the screw-stop h,set in the ear h on said head I and bearing upon the base-plate of theframe A, as shown in Fig. 2, substantially as in my prior application.

In operatingupon a shoe-sole to rough-round it the sole edge is insertedbetween the pressure-rolls h and b on one side and the anvilplate 0 andthe feed-disk N on the otherside, with the tread-surface of the soletoward said rolls and the lower edge of the feed-disk in contact withthe inseam, as in my prior application.

If it is desired to rough-round a sole having a Baltimore edge, socalled-that is, a sole that on the outside of the shoe projects aconstantly-varying distance from the inseam-I automatically raise andlower the head I and the cutter a. This is accomplished as follows:

The shaft D is mounted in a bearing in the frame A and a bearing in thestand Q and has mounted on one end thereof at the right of said frametwo cams i and 2', one or the other of which when the shaft D is rotatedacts upon the roll j to raise the front end of the head I and allow itto be drawn down again by the combined action of gravity and the tensionof the spring g. The roll or truckj is mounted upon the stud j, set inthe head I, and is movable endwise of said stud to trans fer it from aposition above the cam 2' to a position above the cam i, or vice versa,by means of the shipper-lever 7c, the inner end of which is forked andembraces the edge of the truck j, as shown in Figs. 1 and 2. The roll ortruck j is located above the cams, and the weight of the head I and thetension of the spring 9 will keep said roll in contact with one or theother of said cams unless prevented from such contact by the adjustmentof the screw-stop h. In my prior application cited these two cams andadjustable roll were used; but the roll was below the cams, and the headI had to be held up to keep the truck in contact with the cams by'theoperator keeping his foot upon a treadle during the whole time that thatportion of the sole which has a varying projection is being trimmed orrough-rounded, and in said prior application the shaft upon which thecams were mounted was intermittently rotated by a single ratchet-andpawlmechanism, which was operated by a face-cam secured to the back of thewormwheel N and provided with a series of throws to impart a series ofvibrations to a lever connected to said ratchet mechanism, said cammoving said lever in one direction and a spring moving it in theopposite direction.

In my present application the shaft has firmly secured thereon betweenits two bearings two ratchet-wheels Z and l, separated from each other,and between them is loosely mounted upon the shaft D the lever m, theupper end of which has secured thereto a thin curved metal plate a,which projects laterally over both ratchet-wheels, so as to cover aportion of the teeth of each ratchet, the lower end of said lever 122having pivoted thereto one end of the link m, the opposite end of whichis pivoted to one arm of the elbowlever R, the other arm of which isconnected by the elastic connection 0 to a treadle upon the floor, butnot shown. The shaft D also has loosely mounted thereon, one at theright and the other at the left of said cams, the two pawl-leversp and19', carrying the pawls q and g, respectively, and having pivotedthereto the rods 1' and r, respectively, as shown.

The driving-shaft B has firmly secured thereon just inside thedriving-pulley F the spur gear-wheel S, the teeth of which engage theteeth of the larger spur gear-wheel S, mounted upon the shaft C, so asto be movable endwise thereof to disengage it from the gear S, but whenin engagement with said gear S clamped to said shaft, so that said shaftwill be revolved with said gear-wheel S. The opposite end of the shaft 0has formed thereon the crank-pin 3 (shown in dotted lines in Fig. 3)only slightly eccentric to the aXis of said shaft, to which is fittedone end of the link 8, the opposite end of which is pivoted to the shortarm of the lever J, to the movable end of the long arm of which arepivoted upon a common pin the links r and Z. The rear end of the link 1'is connected to the upper end of the equal-armed levcrT, fulcrumed uponthe stud a, set in the stand U, secured to or formed in one piece withthe frame A, all as shown in Figs. 1 and 3.

The cam-shaft D has firmly secured thereon the grooved pulley D, towhichis attached one end of a cord n, which after passing partiallyaround said pulley and over the sheave v has attached to its other endthe weight V,

which when the truck j is raised by the up ward movement of the frontend of the head I, caused by the action thereon of the lever P whenoperated by the operator, will rotate the cam-shaft in the oppositedirection to that imparted to it by the ratchet mechanisms, the extentof said backward rotation being limited by a stop-pin w, set in saidpulley D,

'coming in contact with a stop-pin w, set in the stand Q, as shown inFigs. 1 and 3.

The shield at, when in its normal position or with its carrying-arm incontact with the adjustable screw-stop a, with whichit is normally heldin contact by the spring m will so cover the teeth of the ratchet-wheelsthat the pawls will not engage said ratchets, and consequently no motionwill be imparted to the cams t' and 'i, even though the pawl-levers arevibrated, and if the machine be op: erated under these conditionswithout the long arm of the lever B being depressed the sole will betrimmed all around at a uniform distance from the inseam.

If a sole is to be trimmed with a Baltimore edge, the shield must bemoved toward the front of the machine a sufficient distance to uncoverone or more additional teeth of the ratchet at its back edge, accordingas to whether the sole to berough-rounded is a short or a long on e.This forward movement is obtained by a downward movement of the elasticconnection 0, caused by the operator placing his foot upon the treadleconnected therewith and depressing it. To limit said forward movement ofthe shield to any desired point, I provide the screw-stop pin a threadedin the bracket or ear and having secured thereon the hand index-wheel WVand detent-collar c, by means of clamping-nut 0 said collar 0 havingfour detent-notches 1, 2, 3, and 4 formed in its periphery at equaldistances from each other, with one of which notches the detent-spring dis engaged whenever the machine is in operation.

The index-wheel W has stamped or otherwise fiXed upon its front face thenumbers 6, 8, 10, and 1.2 around its outer edge and at equal distancesfrom each other, thenumbers 6 and 10 being in the same vertical plane asthe detent-notches 1 and 3, and the numbers 8 and 12 being in the samehorizontal plane as the detent-notches 2 and 4.

When the index-wheel WV is in the position shown in Fig. 2, with theindex-figure 6 at the top,the screw-stop a will be in the positionindicated in Fig. 4 and the machine is adjusted for rough-rounding a No.5 to No. 6%,; sole with a Baltimore edge; but if said inde. wheel beturned one-quarter of a revolution in the direction indicated by thearrow on said wheel the stop-screw will be moved toward the stop a adistance equal to one half atooth of the ratchet and the machine will bein condition to rough-round aNo. 7 to No. 8% sole, and so on, eachone-quarter of a revolution of the index-wheel in the same directionadvancing the screw-stop a distance equal to one-half a tooth of theratchet, until the indeX-figure l2 is uppermost, which is the limit ofmovement in that direction.

The cams t' and t" are designed to be moved about their axes of motionby the action of the pawls upon the ratchet-wheels only onehalf of arevolution and in order to prevent a greater movement, even if theoperator should neglect to remove his foot from the treadle at theproper time, each of the ratchetwheels Z and l has a section of itsperiphery left smooth or without teeth, as shown at 8 on Fig. 4,substantially as in my prior application.

Two stop-pawls e are pivoted to a portion of the frame A, are pressedinto engagement with the teeth of the ratchet-wheels by springs, andretracted therefrom by the action thereon of the lever f, which isoperated substantially as in my prior application before cited.

The studj is adjustably set in the slot g, formed in the head I, asshown in dotted lines in Fig. 3, so that the truckj maybe raised orlowered to bring it into contact with the portion of the cam having thesmallest radius when the stop-screw it rests upon the baseplate of theframe A.

The cutter Ct is made of the form shown in plan in Fig. 7 and has acutting edge across its forward end around the projection 5 and alongtheright-hand edge to 6, as shown in Fig. 7.

The advantage of a cutter formed as shown is that some portion of thecutting will be done during the backward movement of said cutter.

It will be observed that the cams i and t" are right and left cams,being otherwise exactly alike, and impart the same motion to the head I,but in the reverse order.

The springs g and M are provided with screw-adjusting devices forregulating the tensions thereof in a well-known manner, as shown inFigs. 1, 2, and 3. The operation of my invention will be readilyunderstood from the foregoing without further explanation.

Another application of mine, filed July 17, 1897, and serially numbered644,892, shows, describes, and claims the obliquely-arranged feed-disk,the reciprocating cutter, and the anvil-plate, the vibrating armcarrying said cutter, and cams for vibrating said arm, which are notclaimed herein except in essentially-different combinations; and inanother application of mine, filed December 18, 1897, and seriallynumbered 662,365, are

shown and described, but not claimed, the

double ratchet-and-pawl mechanism for rotating the cams for controllingthe elevation of the reciprocating cutter and the system of levers andlinks for operating said ratchets alternately which are claimed herein.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is-

1. A cutter for sole rough rounding machines having a cutting edgeacross its front end and along one side and having a rounded or curvedlateral projection at the junction of said cutting end and side.

2. In a sole-rough-rounding machine the combination of a feed-shaftmounted in fixed bearings in an inclined position; a feed-disk carriedby said shaft; an oscillating cutterhead; a cutter carried by said head;means for reciprocating said cutter in a direction at right angles tothe line of feed; a cam-shaft mounted in fixed bearings; a pair of rightand left pattern-cams carried by said shaft; means for rotating saidcams through a halfrevolution; an antifriction truck mounted ICC upon astud adj ustably set in said cutter-head above said cams and movableendwise of said stud for the purposes specified.

3. In a sole-rough-rounding machine the combination with a rotaryfeed-disk; of an oscillating cutter-head; a reciprocating cutter carriedby said head; a gage-bar fitted to a bearing in said head and movableendwise toward and from said feed-disk; a pressureroll mounted on afixed stud set in said bar; and a second pressure-roll mounted upon astud adjustably connected to said bar and movable thereon in thedirection of the length of said bar.

I 4. In a sole-rough-rounding machine the combination of a feed-shaftmounted in fixed bearings; a feed-disk carried by said shaft; means forrevolving said disk; a pivoted cutter-head pressure-rolls and a cuttercarried by said head; means for moving said cutter and rolls toward andfrom said feed-disk; a cam-shaft mounted in-fixed bearings; a pair ofright and left pattern-cams mounted on said shaft; an antifriction-truckmounted upon a stud, adjustably set in said cutterhead, and movableendwise thereon from a position over one cam to a position over theother cam; a pair of ratchet-Wheels mounted on said cam-shaft in fixedpositions; an adjustable shield covering portions of the teeth of eachratchet; a pair of levers each carrying a pawl to act upon one of saidratchets and means for vibrating said pawl-levers in opposite directionsor so that when one pawl is advancing the other is receding, as setforth.

5. In a sole-rough-rounding machine the combination of the shafts B andO; the gears S and S; the vibratory head I; the antifriction-truck jcarried by said head; the camshaft D mounted in fixed bearings; theright and left pattern-cams 2' and 7; and the ratchetwheels Z and Zcarried by the shaft D; the

shield 41; means for controlling the position of said shield; thepawl-levers p and p; the pavvls q and q; the links Tr and 2f; the leversJ and T; the crank-pin s on the shaft 0 and link .9 all constructed,arranged and operating substantially as described.

6. In a sole-rough-rounding machine the combination with Work-feedingmechanism, of a vibratory cutter-head; a reciprocating cutter and anantifriction-truck carried by said head; a cam shaft mounted in fixedbearings; a pair of right and left patterncams fixed upon said cam-shaftand arranged to act upon said truck to raise said cutterhead; aratchet-wheel mounted upon said cam-shaft a pawl and pawl-lever formoving said shaft about its axis; a lever provided with a shield tocover a portion of the teeth of said ratchet; an adjustable stop tolimit the movement of said shield in one direction; a spring to normallyhold said shield-lever in contact with said stop; a second adjustablestop screw to limit the movement of said shield-lever in the oppositedirection; an index-wheel and a detent-collar secured upon saidscrew-stop; and a detent-sprin g to lock said screw-stop in adjustedposition.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 8th day of September, A.D. 1897.

HANFORD T. CROSBY.

lVitnesses:

N. G. LOMBARD, RoBr. GILMAN.

